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# util.py - Mercurial utility functions and platform specfic implementations
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#
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# Copyright 2005 K. Thananchayan <thananck@yahoo.com>
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# Copyright 2005-2007 Matt Mackall <mpm@selenic.com>
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# Copyright 2006 Vadim Gelfer <vadim.gelfer@gmail.com>
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#
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# This software may be used and distributed according to the terms of the
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# GNU General Public License version 2 or any later version.
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"""Mercurial utility functions and platform specfic implementations.
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This contains helper routines that are independent of the SCM core and
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hide platform-specific details from the core.
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"""
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from i18n import _
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import error, osutil, encoding
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import errno, re, shutil, sys, tempfile, traceback
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import os, time, calendar, textwrap, unicodedata, signal
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import imp, socket
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# Python compatibility
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def sha1(s):
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return _fastsha1(s)
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def _fastsha1(s):
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# This function will import sha1 from hashlib or sha (whichever is
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# available) and overwrite itself with it on the first call.
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# Subsequent calls will go directly to the imported function.
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if sys.version_info >= (2, 5):
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from hashlib import sha1 as _sha1
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else:
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from sha import sha as _sha1
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global _fastsha1, sha1
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_fastsha1 = sha1 = _sha1
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return _sha1(s)
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import __builtin__
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if sys.version_info[0] < 3:
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def fakebuffer(sliceable, offset=0):
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return sliceable[offset:]
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else:
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def fakebuffer(sliceable, offset=0):
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return memoryview(sliceable)[offset:]
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try:
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buffer
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except NameError:
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__builtin__.buffer = fakebuffer
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import subprocess
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closefds = os.name == 'posix'
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def popen2(cmd, env=None, newlines=False):
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# Setting bufsize to -1 lets the system decide the buffer size.
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# The default for bufsize is 0, meaning unbuffered. This leads to
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# poor performance on Mac OS X: http://bugs.python.org/issue4194
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p = subprocess.Popen(cmd, shell=True, bufsize=-1,
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close_fds=closefds,
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stdin=subprocess.PIPE, stdout=subprocess.PIPE,
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universal_newlines=newlines,
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env=env)
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return p.stdin, p.stdout
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def popen3(cmd, env=None, newlines=False):
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p = subprocess.Popen(cmd, shell=True, bufsize=-1,
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close_fds=closefds,
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stdin=subprocess.PIPE, stdout=subprocess.PIPE,
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stderr=subprocess.PIPE,
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universal_newlines=newlines,
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env=env)
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return p.stdin, p.stdout, p.stderr
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def version():
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"""Return version information if available."""
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try:
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import __version__
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return __version__.version
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except ImportError:
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return 'unknown'
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# used by parsedate
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defaultdateformats = (
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'%Y-%m-%d %H:%M:%S',
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'%Y-%m-%d %I:%M:%S%p',
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'%Y-%m-%d %H:%M',
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'%Y-%m-%d %I:%M%p',
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'%Y-%m-%d',
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'%m-%d',
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'%m/%d',
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'%m/%d/%y',
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'%m/%d/%Y',
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'%a %b %d %H:%M:%S %Y',
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'%a %b %d %I:%M:%S%p %Y',
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'%a, %d %b %Y %H:%M:%S', # GNU coreutils "/bin/date --rfc-2822"
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'%b %d %H:%M:%S %Y',
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'%b %d %I:%M:%S%p %Y',
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'%b %d %H:%M:%S',
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'%b %d %I:%M:%S%p',
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'%b %d %H:%M',
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'%b %d %I:%M%p',
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'%b %d %Y',
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'%b %d',
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'%H:%M:%S',
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'%I:%M:%S%p',
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'%H:%M',
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'%I:%M%p',
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)
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extendeddateformats = defaultdateformats + (
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"%Y",
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"%Y-%m",
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"%b",
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"%b %Y",
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)
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def cachefunc(func):
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'''cache the result of function calls'''
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# XXX doesn't handle keywords args
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cache = {}
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if func.func_code.co_argcount == 1:
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# we gain a small amount of time because
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# we don't need to pack/unpack the list
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def f(arg):
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if arg not in cache:
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cache[arg] = func(arg)
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return cache[arg]
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else:
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def f(*args):
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if args not in cache:
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cache[args] = func(*args)
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return cache[args]
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return f
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def lrucachefunc(func):
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'''cache most recent results of function calls'''
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cache = {}
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order = []
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if func.func_code.co_argcount == 1:
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def f(arg):
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if arg not in cache:
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if len(cache) > 20:
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del cache[order.pop(0)]
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cache[arg] = func(arg)
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else:
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order.remove(arg)
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order.append(arg)
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return cache[arg]
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else:
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def f(*args):
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if args not in cache:
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if len(cache) > 20:
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del cache[order.pop(0)]
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cache[args] = func(*args)
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else:
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order.remove(args)
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order.append(args)
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return cache[args]
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return f
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class propertycache(object):
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def __init__(self, func):
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self.func = func
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self.name = func.__name__
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def __get__(self, obj, type=None):
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result = self.func(obj)
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setattr(obj, self.name, result)
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return result
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def pipefilter(s, cmd):
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'''filter string S through command CMD, returning its output'''
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p = subprocess.Popen(cmd, shell=True, close_fds=closefds,
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stdin=subprocess.PIPE, stdout=subprocess.PIPE)
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pout, perr = p.communicate(s)
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return pout
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def tempfilter(s, cmd):
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'''filter string S through a pair of temporary files with CMD.
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CMD is used as a template to create the real command to be run,
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with the strings INFILE and OUTFILE replaced by the real names of
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the temporary files generated.'''
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inname, outname = None, None
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try:
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infd, inname = tempfile.mkstemp(prefix='hg-filter-in-')
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fp = os.fdopen(infd, 'wb')
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fp.write(s)
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fp.close()
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outfd, outname = tempfile.mkstemp(prefix='hg-filter-out-')
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os.close(outfd)
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cmd = cmd.replace('INFILE', inname)
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cmd = cmd.replace('OUTFILE', outname)
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code = os.system(cmd)
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if sys.platform == 'OpenVMS' and code & 1:
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code = 0
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if code:
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raise Abort(_("command '%s' failed: %s") %
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(cmd, explain_exit(code)))
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fp = open(outname, 'rb')
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r = fp.read()
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fp.close()
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return r
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finally:
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try:
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if inname:
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os.unlink(inname)
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except OSError:
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pass
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try:
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if outname:
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os.unlink(outname)
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except OSError:
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pass
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filtertable = {
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'tempfile:': tempfilter,
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'pipe:': pipefilter,
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}
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def filter(s, cmd):
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"filter a string through a command that transforms its input to its output"
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for name, fn in filtertable.iteritems():
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if cmd.startswith(name):
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return fn(s, cmd[len(name):].lstrip())
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return pipefilter(s, cmd)
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def binary(s):
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"""return true if a string is binary data"""
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return bool(s and '\0' in s)
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def increasingchunks(source, min=1024, max=65536):
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'''return no less than min bytes per chunk while data remains,
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doubling min after each chunk until it reaches max'''
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def log2(x):
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if not x:
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return 0
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i = 0
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while x:
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x >>= 1
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i += 1
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return i - 1
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buf = []
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blen = 0
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for chunk in source:
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buf.append(chunk)
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blen += len(chunk)
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if blen >= min:
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if min < max:
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min = min << 1
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nmin = 1 << log2(blen)
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if nmin > min:
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min = nmin
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if min > max:
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min = max
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yield ''.join(buf)
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blen = 0
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buf = []
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if buf:
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yield ''.join(buf)
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Abort = error.Abort
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def always(fn):
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return True
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def never(fn):
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return False
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def pathto(root, n1, n2):
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'''return the relative path from one place to another.
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root should use os.sep to separate directories
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n1 should use os.sep to separate directories
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n2 should use "/" to separate directories
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returns an os.sep-separated path.
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If n1 is a relative path, it's assumed it's
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relative to root.
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n2 should always be relative to root.
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'''
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if not n1:
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return localpath(n2)
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if os.path.isabs(n1):
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if os.path.splitdrive(root)[0] != os.path.splitdrive(n1)[0]:
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return os.path.join(root, localpath(n2))
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n2 = '/'.join((pconvert(root), n2))
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a, b = splitpath(n1), n2.split('/')
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a.reverse()
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b.reverse()
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while a and b and a[-1] == b[-1]:
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a.pop()
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b.pop()
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b.reverse()
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return os.sep.join((['..'] * len(a)) + b) or '.'
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_hgexecutable = None
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def main_is_frozen():
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"""return True if we are a frozen executable.
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The code supports py2exe (most common, Windows only) and tools/freeze
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(portable, not much used).
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"""
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return (hasattr(sys, "frozen") or # new py2exe
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hasattr(sys, "importers") or # old py2exe
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imp.is_frozen("__main__")) # tools/freeze
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def hgexecutable():
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"""return location of the 'hg' executable.
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Defaults to $HG or 'hg' in the search path.
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"""
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if _hgexecutable is None:
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hg = os.environ.get('HG')
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if hg:
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set_hgexecutable(hg)
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elif main_is_frozen():
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set_hgexecutable(sys.executable)
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else:
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exe = find_exe('hg') or os.path.basename(sys.argv[0])
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set_hgexecutable(exe)
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return _hgexecutable
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def set_hgexecutable(path):
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"""set location of the 'hg' executable"""
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global _hgexecutable
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_hgexecutable = path
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def system(cmd, environ={}, cwd=None, onerr=None, errprefix=None, out=None):
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'''enhanced shell command execution.
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run with environment maybe modified, maybe in different dir.
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if command fails and onerr is None, return status. if ui object,
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print error message and return status, else raise onerr object as
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exception.
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if out is specified, it is assumed to be a file-like object that has a
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write() method. stdout and stderr will be redirected to out.'''
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try:
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sys.stdout.flush()
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except Exception:
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pass
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def py2shell(val):
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'convert python object into string that is useful to shell'
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if val is None or val is False:
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return '0'
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if val is True:
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return '1'
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return str(val)
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origcmd = cmd
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cmd = quotecommand(cmd)
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env = dict(os.environ)
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env.update((k, py2shell(v)) for k, v in environ.iteritems())
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env['HG'] = hgexecutable()
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if out is None:
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rc = subprocess.call(cmd, shell=True, close_fds=closefds,
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env=env, cwd=cwd)
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else:
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proc = subprocess.Popen(cmd, shell=True, close_fds=closefds,
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env=env, cwd=cwd, stdout=subprocess.PIPE,
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stderr=subprocess.STDOUT)
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for line in proc.stdout:
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out.write(line)
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proc.wait()
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rc = proc.returncode
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if sys.platform == 'OpenVMS' and rc & 1:
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rc = 0
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if rc and onerr:
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errmsg = '%s %s' % (os.path.basename(origcmd.split(None, 1)[0]),
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explain_exit(rc)[0])
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if errprefix:
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errmsg = '%s: %s' % (errprefix, errmsg)
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try:
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onerr.warn(errmsg + '\n')
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except AttributeError:
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raise onerr(errmsg)
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return rc
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def checksignature(func):
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'''wrap a function with code to check for calling errors'''
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def check(*args, **kwargs):
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try:
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return func(*args, **kwargs)
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except TypeError:
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if len(traceback.extract_tb(sys.exc_info()[2])) == 1:
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raise error.SignatureError
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raise
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return check
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def makedir(path, notindexed):
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os.mkdir(path)
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def unlinkpath(f):
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"""unlink and remove the directory if it is empty"""
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os.unlink(f)
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# try removing directories that might now be empty
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try:
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os.removedirs(os.path.dirname(f))
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except OSError:
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pass
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def copyfile(src, dest):
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"copy a file, preserving mode and atime/mtime"
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if os.path.islink(src):
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try:
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os.unlink(dest)
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except OSError:
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pass
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os.symlink(os.readlink(src), dest)
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else:
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try:
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shutil.copyfile(src, dest)
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shutil.copymode(src, dest)
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except shutil.Error, inst:
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raise Abort(str(inst))
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def copyfiles(src, dst, hardlink=None):
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"""Copy a directory tree using hardlinks if possible"""
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if hardlink is None:
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hardlink = (os.stat(src).st_dev ==
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os.stat(os.path.dirname(dst)).st_dev)
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num = 0
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if os.path.isdir(src):
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os.mkdir(dst)
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for name, kind in osutil.listdir(src):
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srcname = os.path.join(src, name)
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dstname = os.path.join(dst, name)
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hardlink, n = copyfiles(srcname, dstname, hardlink)
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num += n
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else:
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if hardlink:
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try:
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os_link(src, dst)
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except (IOError, OSError):
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hardlink = False
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shutil.copy(src, dst)
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else:
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shutil.copy(src, dst)
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num += 1
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return hardlink, num
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_windows_reserved_filenames = '''con prn aux nul
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|
|
com1 com2 com3 com4 com5 com6 com7 com8 com9
|
|
|
lpt1 lpt2 lpt3 lpt4 lpt5 lpt6 lpt7 lpt8 lpt9'''.split()
|
|
|
_windows_reserved_chars = ':*?"<>|'
|
|
|
def checkwinfilename(path):
|
|
|
'''Check that the base-relative path is a valid filename on Windows.
|
|
|
Returns None if the path is ok, or a UI string describing the problem.
|
|
|
|
|
|
>>> checkwinfilename("just/a/normal/path")
|
|
|
>>> checkwinfilename("foo/bar/con.xml")
|
|
|
"filename contains 'con', which is reserved on Windows"
|
|
|
>>> checkwinfilename("foo/con.xml/bar")
|
|
|
"filename contains 'con', which is reserved on Windows"
|
|
|
>>> checkwinfilename("foo/bar/xml.con")
|
|
|
>>> checkwinfilename("foo/bar/AUX/bla.txt")
|
|
|
"filename contains 'AUX', which is reserved on Windows"
|
|
|
>>> checkwinfilename("foo/bar/bla:.txt")
|
|
|
"filename contains ':', which is reserved on Windows"
|
|
|
>>> checkwinfilename("foo/bar/b\07la.txt")
|
|
|
"filename contains '\\\\x07', which is invalid on Windows"
|
|
|
>>> checkwinfilename("foo/bar/bla ")
|
|
|
"filename ends with ' ', which is not allowed on Windows"
|
|
|
'''
|
|
|
for n in path.replace('\\', '/').split('/'):
|
|
|
if not n:
|
|
|
continue
|
|
|
for c in n:
|
|
|
if c in _windows_reserved_chars:
|
|
|
return _("filename contains '%s', which is reserved "
|
|
|
"on Windows") % c
|
|
|
if ord(c) <= 31:
|
|
|
return _("filename contains %r, which is invalid "
|
|
|
"on Windows") % c
|
|
|
base = n.split('.')[0]
|
|
|
if base and base.lower() in _windows_reserved_filenames:
|
|
|
return _("filename contains '%s', which is reserved "
|
|
|
"on Windows") % base
|
|
|
t = n[-1]
|
|
|
if t in '. ':
|
|
|
return _("filename ends with '%s', which is not allowed "
|
|
|
"on Windows") % t
|
|
|
|
|
|
def lookup_reg(key, name=None, scope=None):
|
|
|
return None
|
|
|
|
|
|
def hidewindow():
|
|
|
"""Hide current shell window.
|
|
|
|
|
|
Used to hide the window opened when starting asynchronous
|
|
|
child process under Windows, unneeded on other systems.
|
|
|
"""
|
|
|
pass
|
|
|
|
|
|
if os.name == 'nt':
|
|
|
checkosfilename = checkwinfilename
|
|
|
from windows import *
|
|
|
else:
|
|
|
from posix import *
|
|
|
|
|
|
def makelock(info, pathname):
|
|
|
try:
|
|
|
return os.symlink(info, pathname)
|
|
|
except OSError, why:
|
|
|
if why.errno == errno.EEXIST:
|
|
|
raise
|
|
|
except AttributeError: # no symlink in os
|
|
|
pass
|
|
|
|
|
|
ld = os.open(pathname, os.O_CREAT | os.O_WRONLY | os.O_EXCL)
|
|
|
os.write(ld, info)
|
|
|
os.close(ld)
|
|
|
|
|
|
def readlock(pathname):
|
|
|
try:
|
|
|
return os.readlink(pathname)
|
|
|
except OSError, why:
|
|
|
if why.errno not in (errno.EINVAL, errno.ENOSYS):
|
|
|
raise
|
|
|
except AttributeError: # no symlink in os
|
|
|
pass
|
|
|
fp = posixfile(pathname)
|
|
|
r = fp.read()
|
|
|
fp.close()
|
|
|
return r
|
|
|
|
|
|
def fstat(fp):
|
|
|
'''stat file object that may not have fileno method.'''
|
|
|
try:
|
|
|
return os.fstat(fp.fileno())
|
|
|
except AttributeError:
|
|
|
return os.stat(fp.name)
|
|
|
|
|
|
# File system features
|
|
|
|
|
|
def checkcase(path):
|
|
|
"""
|
|
|
Check whether the given path is on a case-sensitive filesystem
|
|
|
|
|
|
Requires a path (like /foo/.hg) ending with a foldable final
|
|
|
directory component.
|
|
|
"""
|
|
|
s1 = os.stat(path)
|
|
|
d, b = os.path.split(path)
|
|
|
p2 = os.path.join(d, b.upper())
|
|
|
if path == p2:
|
|
|
p2 = os.path.join(d, b.lower())
|
|
|
try:
|
|
|
s2 = os.stat(p2)
|
|
|
if s2 == s1:
|
|
|
return False
|
|
|
return True
|
|
|
except OSError:
|
|
|
return True
|
|
|
|
|
|
_fspathcache = {}
|
|
|
def fspath(name, root):
|
|
|
'''Get name in the case stored in the filesystem
|
|
|
|
|
|
The name is either relative to root, or it is an absolute path starting
|
|
|
with root. Note that this function is unnecessary, and should not be
|
|
|
called, for case-sensitive filesystems (simply because it's expensive).
|
|
|
'''
|
|
|
# If name is absolute, make it relative
|
|
|
if name.lower().startswith(root.lower()):
|
|
|
l = len(root)
|
|
|
if name[l] == os.sep or name[l] == os.altsep:
|
|
|
l = l + 1
|
|
|
name = name[l:]
|
|
|
|
|
|
if not os.path.lexists(os.path.join(root, name)):
|
|
|
return None
|
|
|
|
|
|
seps = os.sep
|
|
|
if os.altsep:
|
|
|
seps = seps + os.altsep
|
|
|
# Protect backslashes. This gets silly very quickly.
|
|
|
seps.replace('\\','\\\\')
|
|
|
pattern = re.compile(r'([^%s]+)|([%s]+)' % (seps, seps))
|
|
|
dir = os.path.normcase(os.path.normpath(root))
|
|
|
result = []
|
|
|
for part, sep in pattern.findall(name):
|
|
|
if sep:
|
|
|
result.append(sep)
|
|
|
continue
|
|
|
|
|
|
if dir not in _fspathcache:
|
|
|
_fspathcache[dir] = os.listdir(dir)
|
|
|
contents = _fspathcache[dir]
|
|
|
|
|
|
lpart = part.lower()
|
|
|
lenp = len(part)
|
|
|
for n in contents:
|
|
|
if lenp == len(n) and n.lower() == lpart:
|
|
|
result.append(n)
|
|
|
break
|
|
|
else:
|
|
|
# Cannot happen, as the file exists!
|
|
|
result.append(part)
|
|
|
dir = os.path.join(dir, lpart)
|
|
|
|
|
|
return ''.join(result)
|
|
|
|
|
|
def checknlink(testfile):
|
|
|
'''check whether hardlink count reporting works properly'''
|
|
|
|
|
|
# testfile may be open, so we need a separate file for checking to
|
|
|
# work around issue2543 (or testfile may get lost on Samba shares)
|
|
|
f1 = testfile + ".hgtmp1"
|
|
|
if os.path.lexists(f1):
|
|
|
return False
|
|
|
try:
|
|
|
posixfile(f1, 'w').close()
|
|
|
except IOError:
|
|
|
return False
|
|
|
|
|
|
f2 = testfile + ".hgtmp2"
|
|
|
fd = None
|
|
|
try:
|
|
|
try:
|
|
|
os_link(f1, f2)
|
|
|
except OSError:
|
|
|
return False
|
|
|
|
|
|
# nlinks() may behave differently for files on Windows shares if
|
|
|
# the file is open.
|
|
|
fd = posixfile(f2)
|
|
|
return nlinks(f2) > 1
|
|
|
finally:
|
|
|
if fd is not None:
|
|
|
fd.close()
|
|
|
for f in (f1, f2):
|
|
|
try:
|
|
|
os.unlink(f)
|
|
|
except OSError:
|
|
|
pass
|
|
|
|
|
|
return False
|
|
|
|
|
|
def endswithsep(path):
|
|
|
'''Check path ends with os.sep or os.altsep.'''
|
|
|
return path.endswith(os.sep) or os.altsep and path.endswith(os.altsep)
|
|
|
|
|
|
def splitpath(path):
|
|
|
'''Split path by os.sep.
|
|
|
Note that this function does not use os.altsep because this is
|
|
|
an alternative of simple "xxx.split(os.sep)".
|
|
|
It is recommended to use os.path.normpath() before using this
|
|
|
function if need.'''
|
|
|
return path.split(os.sep)
|
|
|
|
|
|
def gui():
|
|
|
'''Are we running in a GUI?'''
|
|
|
if sys.platform == 'darwin':
|
|
|
if 'SSH_CONNECTION' in os.environ:
|
|
|
# handle SSH access to a box where the user is logged in
|
|
|
return False
|
|
|
elif getattr(osutil, 'isgui', None):
|
|
|
# check if a CoreGraphics session is available
|
|
|
return osutil.isgui()
|
|
|
else:
|
|
|
# pure build; use a safe default
|
|
|
return True
|
|
|
else:
|
|
|
return os.name == "nt" or os.environ.get("DISPLAY")
|
|
|
|
|
|
def mktempcopy(name, emptyok=False, createmode=None):
|
|
|
"""Create a temporary file with the same contents from name
|
|
|
|
|
|
The permission bits are copied from the original file.
|
|
|
|
|
|
If the temporary file is going to be truncated immediately, you
|
|
|
can use emptyok=True as an optimization.
|
|
|
|
|
|
Returns the name of the temporary file.
|
|
|
"""
|
|
|
d, fn = os.path.split(name)
|
|
|
fd, temp = tempfile.mkstemp(prefix='.%s-' % fn, dir=d)
|
|
|
os.close(fd)
|
|
|
# Temporary files are created with mode 0600, which is usually not
|
|
|
# what we want. If the original file already exists, just copy
|
|
|
# its mode. Otherwise, manually obey umask.
|
|
|
try:
|
|
|
st_mode = os.lstat(name).st_mode & 0777
|
|
|
except OSError, inst:
|
|
|
if inst.errno != errno.ENOENT:
|
|
|
raise
|
|
|
st_mode = createmode
|
|
|
if st_mode is None:
|
|
|
st_mode = ~umask
|
|
|
st_mode &= 0666
|
|
|
os.chmod(temp, st_mode)
|
|
|
if emptyok:
|
|
|
return temp
|
|
|
try:
|
|
|
try:
|
|
|
ifp = posixfile(name, "rb")
|
|
|
except IOError, inst:
|
|
|
if inst.errno == errno.ENOENT:
|
|
|
return temp
|
|
|
if not getattr(inst, 'filename', None):
|
|
|
inst.filename = name
|
|
|
raise
|
|
|
ofp = posixfile(temp, "wb")
|
|
|
for chunk in filechunkiter(ifp):
|
|
|
ofp.write(chunk)
|
|
|
ifp.close()
|
|
|
ofp.close()
|
|
|
except:
|
|
|
try: os.unlink(temp)
|
|
|
except: pass
|
|
|
raise
|
|
|
return temp
|
|
|
|
|
|
class atomictempfile(object):
|
|
|
'''writeable file object that atomically updates a file
|
|
|
|
|
|
All writes will go to a temporary copy of the original file. Call
|
|
|
rename() when you are done writing, and atomictempfile will rename
|
|
|
the temporary copy to the original name, making the changes visible.
|
|
|
|
|
|
Unlike other file-like objects, close() discards your writes by
|
|
|
simply deleting the temporary file.
|
|
|
'''
|
|
|
def __init__(self, name, mode='w+b', createmode=None):
|
|
|
self.__name = name # permanent name
|
|
|
self._tempname = mktempcopy(name, emptyok=('w' in mode),
|
|
|
createmode=createmode)
|
|
|
self._fp = posixfile(self._tempname, mode)
|
|
|
|
|
|
# delegated methods
|
|
|
self.write = self._fp.write
|
|
|
self.fileno = self._fp.fileno
|
|
|
|
|
|
def rename(self):
|
|
|
if not self._fp.closed:
|
|
|
self._fp.close()
|
|
|
rename(self._tempname, localpath(self.__name))
|
|
|
|
|
|
def close(self):
|
|
|
if not self._fp.closed:
|
|
|
try:
|
|
|
os.unlink(self._tempname)
|
|
|
except OSError:
|
|
|
pass
|
|
|
self._fp.close()
|
|
|
|
|
|
def __del__(self):
|
|
|
if hasattr(self, '_fp'): # constructor actually did something
|
|
|
self.close()
|
|
|
|
|
|
def makedirs(name, mode=None):
|
|
|
"""recursive directory creation with parent mode inheritance"""
|
|
|
parent = os.path.abspath(os.path.dirname(name))
|
|
|
try:
|
|
|
os.mkdir(name)
|
|
|
if mode is not None:
|
|
|
os.chmod(name, mode)
|
|
|
return
|
|
|
except OSError, err:
|
|
|
if err.errno == errno.EEXIST:
|
|
|
return
|
|
|
if not name or parent == name or err.errno != errno.ENOENT:
|
|
|
raise
|
|
|
makedirs(parent, mode)
|
|
|
makedirs(name, mode)
|
|
|
|
|
|
class chunkbuffer(object):
|
|
|
"""Allow arbitrary sized chunks of data to be efficiently read from an
|
|
|
iterator over chunks of arbitrary size."""
|
|
|
|
|
|
def __init__(self, in_iter):
|
|
|
"""in_iter is the iterator that's iterating over the input chunks.
|
|
|
targetsize is how big a buffer to try to maintain."""
|
|
|
def splitbig(chunks):
|
|
|
for chunk in chunks:
|
|
|
if len(chunk) > 2**20:
|
|
|
pos = 0
|
|
|
while pos < len(chunk):
|
|
|
end = pos + 2 ** 18
|
|
|
yield chunk[pos:end]
|
|
|
pos = end
|
|
|
else:
|
|
|
yield chunk
|
|
|
self.iter = splitbig(in_iter)
|
|
|
self._queue = []
|
|
|
|
|
|
def read(self, l):
|
|
|
"""Read L bytes of data from the iterator of chunks of data.
|
|
|
Returns less than L bytes if the iterator runs dry."""
|
|
|
left = l
|
|
|
buf = ''
|
|
|
queue = self._queue
|
|
|
while left > 0:
|
|
|
# refill the queue
|
|
|
if not queue:
|
|
|
target = 2**18
|
|
|
for chunk in self.iter:
|
|
|
queue.append(chunk)
|
|
|
target -= len(chunk)
|
|
|
if target <= 0:
|
|
|
break
|
|
|
if not queue:
|
|
|
break
|
|
|
|
|
|
chunk = queue.pop(0)
|
|
|
left -= len(chunk)
|
|
|
if left < 0:
|
|
|
queue.insert(0, chunk[left:])
|
|
|
buf += chunk[:left]
|
|
|
else:
|
|
|
buf += chunk
|
|
|
|
|
|
return buf
|
|
|
|
|
|
def filechunkiter(f, size=65536, limit=None):
|
|
|
"""Create a generator that produces the data in the file size
|
|
|
(default 65536) bytes at a time, up to optional limit (default is
|
|
|
to read all data). Chunks may be less than size bytes if the
|
|
|
chunk is the last chunk in the file, or the file is a socket or
|
|
|
some other type of file that sometimes reads less data than is
|
|
|
requested."""
|
|
|
assert size >= 0
|
|
|
assert limit is None or limit >= 0
|
|
|
while True:
|
|
|
if limit is None:
|
|
|
nbytes = size
|
|
|
else:
|
|
|
nbytes = min(limit, size)
|
|
|
s = nbytes and f.read(nbytes)
|
|
|
if not s:
|
|
|
break
|
|
|
if limit:
|
|
|
limit -= len(s)
|
|
|
yield s
|
|
|
|
|
|
def makedate():
|
|
|
lt = time.localtime()
|
|
|
if lt[8] == 1 and time.daylight:
|
|
|
tz = time.altzone
|
|
|
else:
|
|
|
tz = time.timezone
|
|
|
t = time.mktime(lt)
|
|
|
if t < 0:
|
|
|
hint = _("check your clock")
|
|
|
raise Abort(_("negative timestamp: %d") % t, hint=hint)
|
|
|
return t, tz
|
|
|
|
|
|
def datestr(date=None, format='%a %b %d %H:%M:%S %Y %1%2'):
|
|
|
"""represent a (unixtime, offset) tuple as a localized time.
|
|
|
unixtime is seconds since the epoch, and offset is the time zone's
|
|
|
number of seconds away from UTC. if timezone is false, do not
|
|
|
append time zone to string."""
|
|
|
t, tz = date or makedate()
|
|
|
if t < 0:
|
|
|
t = 0 # time.gmtime(lt) fails on Windows for lt < -43200
|
|
|
tz = 0
|
|
|
if "%1" in format or "%2" in format:
|
|
|
sign = (tz > 0) and "-" or "+"
|
|
|
minutes = abs(tz) // 60
|
|
|
format = format.replace("%1", "%c%02d" % (sign, minutes // 60))
|
|
|
format = format.replace("%2", "%02d" % (minutes % 60))
|
|
|
s = time.strftime(format, time.gmtime(float(t) - tz))
|
|
|
return s
|
|
|
|
|
|
def shortdate(date=None):
|
|
|
"""turn (timestamp, tzoff) tuple into iso 8631 date."""
|
|
|
return datestr(date, format='%Y-%m-%d')
|
|
|
|
|
|
def strdate(string, format, defaults=[]):
|
|
|
"""parse a localized time string and return a (unixtime, offset) tuple.
|
|
|
if the string cannot be parsed, ValueError is raised."""
|
|
|
def timezone(string):
|
|
|
tz = string.split()[-1]
|
|
|
if tz[0] in "+-" and len(tz) == 5 and tz[1:].isdigit():
|
|
|
sign = (tz[0] == "+") and 1 or -1
|
|
|
hours = int(tz[1:3])
|
|
|
minutes = int(tz[3:5])
|
|
|
return -sign * (hours * 60 + minutes) * 60
|
|
|
if tz == "GMT" or tz == "UTC":
|
|
|
return 0
|
|
|
return None
|
|
|
|
|
|
# NOTE: unixtime = localunixtime + offset
|
|
|
offset, date = timezone(string), string
|
|
|
if offset is not None:
|
|
|
date = " ".join(string.split()[:-1])
|
|
|
|
|
|
# add missing elements from defaults
|
|
|
usenow = False # default to using biased defaults
|
|
|
for part in ("S", "M", "HI", "d", "mb", "yY"): # decreasing specificity
|
|
|
found = [True for p in part if ("%"+p) in format]
|
|
|
if not found:
|
|
|
date += "@" + defaults[part][usenow]
|
|
|
format += "@%" + part[0]
|
|
|
else:
|
|
|
# We've found a specific time element, less specific time
|
|
|
# elements are relative to today
|
|
|
usenow = True
|
|
|
|
|
|
timetuple = time.strptime(date, format)
|
|
|
localunixtime = int(calendar.timegm(timetuple))
|
|
|
if offset is None:
|
|
|
# local timezone
|
|
|
unixtime = int(time.mktime(timetuple))
|
|
|
offset = unixtime - localunixtime
|
|
|
else:
|
|
|
unixtime = localunixtime + offset
|
|
|
return unixtime, offset
|
|
|
|
|
|
def parsedate(date, formats=None, bias={}):
|
|
|
"""parse a localized date/time and return a (unixtime, offset) tuple.
|
|
|
|
|
|
The date may be a "unixtime offset" string or in one of the specified
|
|
|
formats. If the date already is a (unixtime, offset) tuple, it is returned.
|
|
|
"""
|
|
|
if not date:
|
|
|
return 0, 0
|
|
|
if isinstance(date, tuple) and len(date) == 2:
|
|
|
return date
|
|
|
if not formats:
|
|
|
formats = defaultdateformats
|
|
|
date = date.strip()
|
|
|
try:
|
|
|
when, offset = map(int, date.split(' '))
|
|
|
except ValueError:
|
|
|
# fill out defaults
|
|
|
now = makedate()
|
|
|
defaults = {}
|
|
|
nowmap = {}
|
|
|
for part in ("d", "mb", "yY", "HI", "M", "S"):
|
|
|
# this piece is for rounding the specific end of unknowns
|
|
|
b = bias.get(part)
|
|
|
if b is None:
|
|
|
if part[0] in "HMS":
|
|
|
b = "00"
|
|
|
else:
|
|
|
b = "0"
|
|
|
|
|
|
# this piece is for matching the generic end to today's date
|
|
|
n = datestr(now, "%" + part[0])
|
|
|
|
|
|
defaults[part] = (b, n)
|
|
|
|
|
|
for format in formats:
|
|
|
try:
|
|
|
when, offset = strdate(date, format, defaults)
|
|
|
except (ValueError, OverflowError):
|
|
|
pass
|
|
|
else:
|
|
|
break
|
|
|
else:
|
|
|
raise Abort(_('invalid date: %r') % date)
|
|
|
# validate explicit (probably user-specified) date and
|
|
|
# time zone offset. values must fit in signed 32 bits for
|
|
|
# current 32-bit linux runtimes. timezones go from UTC-12
|
|
|
# to UTC+14
|
|
|
if abs(when) > 0x7fffffff:
|
|
|
raise Abort(_('date exceeds 32 bits: %d') % when)
|
|
|
if when < 0:
|
|
|
raise Abort(_('negative date value: %d') % when)
|
|
|
if offset < -50400 or offset > 43200:
|
|
|
raise Abort(_('impossible time zone offset: %d') % offset)
|
|
|
return when, offset
|
|
|
|
|
|
def matchdate(date):
|
|
|
"""Return a function that matches a given date match specifier
|
|
|
|
|
|
Formats include:
|
|
|
|
|
|
'{date}' match a given date to the accuracy provided
|
|
|
|
|
|
'<{date}' on or before a given date
|
|
|
|
|
|
'>{date}' on or after a given date
|
|
|
|
|
|
>>> p1 = parsedate("10:29:59")
|
|
|
>>> p2 = parsedate("10:30:00")
|
|
|
>>> p3 = parsedate("10:30:59")
|
|
|
>>> p4 = parsedate("10:31:00")
|
|
|
>>> p5 = parsedate("Sep 15 10:30:00 1999")
|
|
|
>>> f = matchdate("10:30")
|
|
|
>>> f(p1[0])
|
|
|
False
|
|
|
>>> f(p2[0])
|
|
|
True
|
|
|
>>> f(p3[0])
|
|
|
True
|
|
|
>>> f(p4[0])
|
|
|
False
|
|
|
>>> f(p5[0])
|
|
|
False
|
|
|
"""
|
|
|
|
|
|
def lower(date):
|
|
|
d = dict(mb="1", d="1")
|
|
|
return parsedate(date, extendeddateformats, d)[0]
|
|
|
|
|
|
def upper(date):
|
|
|
d = dict(mb="12", HI="23", M="59", S="59")
|
|
|
for days in ("31", "30", "29"):
|
|
|
try:
|
|
|
d["d"] = days
|
|
|
return parsedate(date, extendeddateformats, d)[0]
|
|
|
except:
|
|
|
pass
|
|
|
d["d"] = "28"
|
|
|
return parsedate(date, extendeddateformats, d)[0]
|
|
|
|
|
|
date = date.strip()
|
|
|
|
|
|
if not date:
|
|
|
raise Abort(_("dates cannot consist entirely of whitespace"))
|
|
|
elif date[0] == "<":
|
|
|
if not date[1:]:
|
|
|
raise Abort(_("invalid day spec, use '<DATE'"))
|
|
|
when = upper(date[1:])
|
|
|
return lambda x: x <= when
|
|
|
elif date[0] == ">":
|
|
|
if not date[1:]:
|
|
|
raise Abort(_("invalid day spec, use '>DATE'"))
|
|
|
when = lower(date[1:])
|
|
|
return lambda x: x >= when
|
|
|
elif date[0] == "-":
|
|
|
try:
|
|
|
days = int(date[1:])
|
|
|
except ValueError:
|
|
|
raise Abort(_("invalid day spec: %s") % date[1:])
|
|
|
if days < 0:
|
|
|
raise Abort(_("%s must be nonnegative (see 'hg help dates')")
|
|
|
% date[1:])
|
|
|
when = makedate()[0] - days * 3600 * 24
|
|
|
return lambda x: x >= when
|
|
|
elif " to " in date:
|
|
|
a, b = date.split(" to ")
|
|
|
start, stop = lower(a), upper(b)
|
|
|
return lambda x: x >= start and x <= stop
|
|
|
else:
|
|
|
start, stop = lower(date), upper(date)
|
|
|
return lambda x: x >= start and x <= stop
|
|
|
|
|
|
def shortuser(user):
|
|
|
"""Return a short representation of a user name or email address."""
|
|
|
f = user.find('@')
|
|
|
if f >= 0:
|
|
|
user = user[:f]
|
|
|
f = user.find('<')
|
|
|
if f >= 0:
|
|
|
user = user[f + 1:]
|
|
|
f = user.find(' ')
|
|
|
if f >= 0:
|
|
|
user = user[:f]
|
|
|
f = user.find('.')
|
|
|
if f >= 0:
|
|
|
user = user[:f]
|
|
|
return user
|
|
|
|
|
|
def email(author):
|
|
|
'''get email of author.'''
|
|
|
r = author.find('>')
|
|
|
if r == -1:
|
|
|
r = None
|
|
|
return author[author.find('<') + 1:r]
|
|
|
|
|
|
def _ellipsis(text, maxlength):
|
|
|
if len(text) <= maxlength:
|
|
|
return text, False
|
|
|
else:
|
|
|
return "%s..." % (text[:maxlength - 3]), True
|
|
|
|
|
|
def ellipsis(text, maxlength=400):
|
|
|
"""Trim string to at most maxlength (default: 400) characters."""
|
|
|
try:
|
|
|
# use unicode not to split at intermediate multi-byte sequence
|
|
|
utext, truncated = _ellipsis(text.decode(encoding.encoding),
|
|
|
maxlength)
|
|
|
if not truncated:
|
|
|
return text
|
|
|
return utext.encode(encoding.encoding)
|
|
|
except (UnicodeDecodeError, UnicodeEncodeError):
|
|
|
return _ellipsis(text, maxlength)[0]
|
|
|
|
|
|
def bytecount(nbytes):
|
|
|
'''return byte count formatted as readable string, with units'''
|
|
|
|
|
|
units = (
|
|
|
(100, 1 << 30, _('%.0f GB')),
|
|
|
(10, 1 << 30, _('%.1f GB')),
|
|
|
(1, 1 << 30, _('%.2f GB')),
|
|
|
(100, 1 << 20, _('%.0f MB')),
|
|
|
(10, 1 << 20, _('%.1f MB')),
|
|
|
(1, 1 << 20, _('%.2f MB')),
|
|
|
(100, 1 << 10, _('%.0f KB')),
|
|
|
(10, 1 << 10, _('%.1f KB')),
|
|
|
(1, 1 << 10, _('%.2f KB')),
|
|
|
(1, 1, _('%.0f bytes')),
|
|
|
)
|
|
|
|
|
|
for multiplier, divisor, format in units:
|
|
|
if nbytes >= divisor * multiplier:
|
|
|
return format % (nbytes / float(divisor))
|
|
|
return units[-1][2] % nbytes
|
|
|
|
|
|
def uirepr(s):
|
|
|
# Avoid double backslash in Windows path repr()
|
|
|
return repr(s).replace('\\\\', '\\')
|
|
|
|
|
|
# delay import of textwrap
|
|
|
def MBTextWrapper(**kwargs):
|
|
|
class tw(textwrap.TextWrapper):
|
|
|
"""
|
|
|
Extend TextWrapper for double-width characters.
|
|
|
|
|
|
Some Asian characters use two terminal columns instead of one.
|
|
|
A good example of this behavior can be seen with u'\u65e5\u672c',
|
|
|
the two Japanese characters for "Japan":
|
|
|
len() returns 2, but when printed to a terminal, they eat 4 columns.
|
|
|
|
|
|
(Note that this has nothing to do whatsoever with unicode
|
|
|
representation, or encoding of the underlying string)
|
|
|
"""
|
|
|
def __init__(self, **kwargs):
|
|
|
textwrap.TextWrapper.__init__(self, **kwargs)
|
|
|
|
|
|
def _cutdown(self, str, space_left):
|
|
|
l = 0
|
|
|
ucstr = unicode(str, encoding.encoding)
|
|
|
colwidth = unicodedata.east_asian_width
|
|
|
for i in xrange(len(ucstr)):
|
|
|
l += colwidth(ucstr[i]) in 'WFA' and 2 or 1
|
|
|
if space_left < l:
|
|
|
return (ucstr[:i].encode(encoding.encoding),
|
|
|
ucstr[i:].encode(encoding.encoding))
|
|
|
return str, ''
|
|
|
|
|
|
# overriding of base class
|
|
|
def _handle_long_word(self, reversed_chunks, cur_line, cur_len, width):
|
|
|
space_left = max(width - cur_len, 1)
|
|
|
|
|
|
if self.break_long_words:
|
|
|
cut, res = self._cutdown(reversed_chunks[-1], space_left)
|
|
|
cur_line.append(cut)
|
|
|
reversed_chunks[-1] = res
|
|
|
elif not cur_line:
|
|
|
cur_line.append(reversed_chunks.pop())
|
|
|
|
|
|
global MBTextWrapper
|
|
|
MBTextWrapper = tw
|
|
|
return tw(**kwargs)
|
|
|
|
|
|
def wrap(line, width, initindent='', hangindent=''):
|
|
|
maxindent = max(len(hangindent), len(initindent))
|
|
|
if width <= maxindent:
|
|
|
# adjust for weird terminal size
|
|
|
width = max(78, maxindent + 1)
|
|
|
wrapper = MBTextWrapper(width=width,
|
|
|
initial_indent=initindent,
|
|
|
subsequent_indent=hangindent)
|
|
|
return wrapper.fill(line)
|
|
|
|
|
|
def iterlines(iterator):
|
|
|
for chunk in iterator:
|
|
|
for line in chunk.splitlines():
|
|
|
yield line
|
|
|
|
|
|
def expandpath(path):
|
|
|
return os.path.expanduser(os.path.expandvars(path))
|
|
|
|
|
|
def hgcmd():
|
|
|
"""Return the command used to execute current hg
|
|
|
|
|
|
This is different from hgexecutable() because on Windows we want
|
|
|
to avoid things opening new shell windows like batch files, so we
|
|
|
get either the python call or current executable.
|
|
|
"""
|
|
|
if main_is_frozen():
|
|
|
return [sys.executable]
|
|
|
return gethgcmd()
|
|
|
|
|
|
def rundetached(args, condfn):
|
|
|
"""Execute the argument list in a detached process.
|
|
|
|
|
|
condfn is a callable which is called repeatedly and should return
|
|
|
True once the child process is known to have started successfully.
|
|
|
At this point, the child process PID is returned. If the child
|
|
|
process fails to start or finishes before condfn() evaluates to
|
|
|
True, return -1.
|
|
|
"""
|
|
|
# Windows case is easier because the child process is either
|
|
|
# successfully starting and validating the condition or exiting
|
|
|
# on failure. We just poll on its PID. On Unix, if the child
|
|
|
# process fails to start, it will be left in a zombie state until
|
|
|
# the parent wait on it, which we cannot do since we expect a long
|
|
|
# running process on success. Instead we listen for SIGCHLD telling
|
|
|
# us our child process terminated.
|
|
|
terminated = set()
|
|
|
def handler(signum, frame):
|
|
|
terminated.add(os.wait())
|
|
|
prevhandler = None
|
|
|
if hasattr(signal, 'SIGCHLD'):
|
|
|
prevhandler = signal.signal(signal.SIGCHLD, handler)
|
|
|
try:
|
|
|
pid = spawndetached(args)
|
|
|
while not condfn():
|
|
|
if ((pid in terminated or not testpid(pid))
|
|
|
and not condfn()):
|
|
|
return -1
|
|
|
time.sleep(0.1)
|
|
|
return pid
|
|
|
finally:
|
|
|
if prevhandler is not None:
|
|
|
signal.signal(signal.SIGCHLD, prevhandler)
|
|
|
|
|
|
try:
|
|
|
any, all = any, all
|
|
|
except NameError:
|
|
|
def any(iterable):
|
|
|
for i in iterable:
|
|
|
if i:
|
|
|
return True
|
|
|
return False
|
|
|
|
|
|
def all(iterable):
|
|
|
for i in iterable:
|
|
|
if not i:
|
|
|
return False
|
|
|
return True
|
|
|
|
|
|
def interpolate(prefix, mapping, s, fn=None, escape_prefix=False):
|
|
|
"""Return the result of interpolating items in the mapping into string s.
|
|
|
|
|
|
prefix is a single character string, or a two character string with
|
|
|
a backslash as the first character if the prefix needs to be escaped in
|
|
|
a regular expression.
|
|
|
|
|
|
fn is an optional function that will be applied to the replacement text
|
|
|
just before replacement.
|
|
|
|
|
|
escape_prefix is an optional flag that allows using doubled prefix for
|
|
|
its escaping.
|
|
|
"""
|
|
|
fn = fn or (lambda s: s)
|
|
|
patterns = '|'.join(mapping.keys())
|
|
|
if escape_prefix:
|
|
|
patterns += '|' + prefix
|
|
|
if len(prefix) > 1:
|
|
|
prefix_char = prefix[1:]
|
|
|
else:
|
|
|
prefix_char = prefix
|
|
|
mapping[prefix_char] = prefix_char
|
|
|
r = re.compile(r'%s(%s)' % (prefix, patterns))
|
|
|
return r.sub(lambda x: fn(mapping[x.group()[1:]]), s)
|
|
|
|
|
|
def getport(port):
|
|
|
"""Return the port for a given network service.
|
|
|
|
|
|
If port is an integer, it's returned as is. If it's a string, it's
|
|
|
looked up using socket.getservbyname(). If there's no matching
|
|
|
service, util.Abort is raised.
|
|
|
"""
|
|
|
try:
|
|
|
return int(port)
|
|
|
except ValueError:
|
|
|
pass
|
|
|
|
|
|
try:
|
|
|
return socket.getservbyname(port)
|
|
|
except socket.error:
|
|
|
raise Abort(_("no port number associated with service '%s'") % port)
|
|
|
|
|
|
_booleans = {'1': True, 'yes': True, 'true': True, 'on': True, 'always': True,
|
|
|
'0': False, 'no': False, 'false': False, 'off': False,
|
|
|
'never': False}
|
|
|
|
|
|
def parsebool(s):
|
|
|
"""Parse s into a boolean.
|
|
|
|
|
|
If s is not a valid boolean, returns None.
|
|
|
"""
|
|
|
return _booleans.get(s.lower(), None)
|
|
|
|